Finding the Fourth Proportional to 20,774,934.40, 31,164,172.80 and 5,424,260.80
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Solution
The fourth proportional to 20,774,934.40, 31,164,172.80 and 5,424,260.80 is: 8,136,853.65
Step by Step Solution
- Step 1: Write the proportion equation
20,774,934.40 : 31,164,172.80 = 5,424,260.80 : x - Step 2: Convert to fraction form
20,774,934.40/31,164,172.80 = 5,424,260.80/x - Step 3: Cross multiply
20,774,934.40x = 31,164,172.80 × 5,424,260.80 - Step 4: Simplify right side
20,774,934.40x = 169,042,600,883,466.25 - Step 5: Solve for x
x = 169,042,600,883,466.25/20,774,934.40 - Step 6: Final answer
x = 8,136,853.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.